Abstract:Research purposes: Tunnel-induced pipeline damage has become a big issue, and the protection of pre-existing underground buried pipelines grows to be a public concern. Based on the impacts of metro construction on the safety of adjacent pipelines, the safety risk management standard for the existing pipelines adjacent to metro construction is studied. A systematic safety risk management system for the existing pipelines is also developed, providing supports for safety assurance and protection of adjacent pipelines at different risk levels.
Research conclusions: (1)According to the horizontal and vertical relative distances between the metro structure and the adjacent pipeline,the neighboring grade is divided into five levels(I-V); (2)To use the horizontal and vertical pipeline deformations as indicators to establish the safety control standard for the underground buried pipelines is more representative than other indicators; (3)With the deformation of the existing pipeline, usage, and its operation status taken into account, the safety risk of the tunnel-induced pipeline damage can be assessed into five different levels, namely Safe, Basic Safe, Dangerous, Basic Dangerous, and Very Dangerous. Corresponding prevention and protection measures are further proposed before and during the construction process for the adjacent pipelines according to their evaluated risk levels; (4) The proposed method is applied in one shaft foundation pit excavation project in Wuhan metro tunnel construction, and the results demonstrate the feasibility of the proposed method; (5)The research conclusions can be used in the metro tunnel construction fields by providing decision supports on the construction safety management.
吴贤国,曾铁梅,张立茂,宋若昕. 地铁施工邻近管线安全风险管理研究[J]. 铁道工程学报, 2013, 30(9): 127-132.
Wu Xian-guo, ZENG Tie-mei, ZHANG Li-mao, SONG Ruo-xin. Research on Safety Management of Adjacent Underground Pipelines in Metro Construction. 铁道工程学报, 2013, 30(9): 127-132.
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